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Old 10-27-2004, 07:12 AM
  #1    
jlr
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Default 3" Copper Grounding Foil

Trying to find a place that sells 3" copper grounding foil 3 mil thick. I need about one yard. Can anyone recommend a source. It's being used as a ground on a SSB.
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Old 10-27-2004, 09:20 AM
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Default RE: 3" Copper Grounding Foil

West Marine sells it. Go to http://mastercatalog04.westmarine.com/0074.asp for more info.
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Old 10-27-2004, 09:45 AM
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Default RE: 3" Copper Grounding Foil

Thanks.
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Old 10-28-2004, 08:22 AM
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jlr
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Default RE: 3" Copper Grounding Foil

I have finally worked on my SEA 222 so that it is almost perfect. I do have one last question. I replaced a copper pipe that I was using as the ground link from the tuner to the RF ground with copper foil I bought from West Marine. The foil is 25' long (comes in a roll) and is 3 mil thick. Here's the question. The distance from the 1612 B tuner ground lug to the RF ground stud on my fly bridge is about 2 feet. Do I cut one 2 foot strip of the foil and use that. Do I cut several (5) 2 foot strips of the foil and use that. Or do I connect one end of the foil to the tuner, fold the rest of the copper foil without cutting it, and connect the other end to the RF ground. Which works best- 2 feet of foil, 5, 2 foot strips of foil, or one 25' strip of foil folded onto itself? Thanks.
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Old 10-28-2004, 12:52 PM
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Default RE: 3" Copper Grounding Foil

Glad to hear you got that thing working. When working with RF grounds, the less breaks, the better, also try not to kink that stuff, sweeping bends are better.
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Old 10-28-2004, 02:33 PM
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jlr
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Default RE: 3" Copper Grounding Foil

Thanks--then is 20 feet rolled up better than 2 feet for the RF ground connection between the tuner and the RF lug?
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Old 10-28-2004, 05:40 PM
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Default RE: 3" Copper Grounding Foil

Two feet is fine.

On a small boat the antenna is the biggest challenge to do well not the ground plane which should be the ocean. What are you using to for your antenna?

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Steven
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Old 10-29-2004, 06:12 AM
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jlr
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Default RE: 3" Copper Grounding Foil

Using a 23' three piece whip from Shakespeare and I am not that thrilled with it. Any better ideas?
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Old 10-29-2004, 07:47 AM
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Default RE: 3" Copper Grounding Foil

Shorter is better. Why would you have to roll up 20' of the stuff?
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Old 10-29-2004, 08:37 AM
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jlr
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Default RE: 3" Copper Grounding Foil

I thought the greater the surface area of this connection the better. I guess not.
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Old 10-29-2004, 01:35 PM
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Default RE: 3" Copper Grounding Foil

Surface area, yes. Rolled up foil though doesn't count for that. If you had a plate, that would be better.
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Old 10-29-2004, 08:48 PM
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Default RE: 3" Copper Grounding Foil

Unfortunately you can't beat the laws of physics. The ideal situation would be to have a wave dipole antenna. At the SSB marine radio frequency of 2180 KHz the length of this antenna would be 214 feet. Your boat is a little too small to support this. Thus your SSB antenna is a major compromise and is the equivalent to the small rubber antennas used on hand held VHF marine radios. It should however work fine. I am not sure if you need an antenna tuner with it though. However if the Shakespeare antenna is tuned to work in the marine SSB band it should be okay without a tuner.

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